/*
 * Copyright (c) 2009, Takashi Ito
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the authors nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "tssp_internal.h"
#include "tssp_timer_impl.h"

static
void timer_cb(int fd, short reason, void *userdata)
{
    struct tssp_timer_handle *handle = userdata;
    handle->callback(handle->userdata);
}

struct tssp_timer_handle *
tssp_timer_impl_create(uint32_t timeout,
                       tssp_timer_callback callback,
                       void *userdata)
{
    struct tssp_timer_handle *handle;
    struct timeval tv = {
        .tv_sec = timeout / (1000 * 1000),
        .tv_usec = timeout % (1000 * 1000),
    };

    if (timeout == 0)
        return NULL;

    handle = malloc(sizeof(*handle));
    if (handle == NULL)
        return NULL;

    evtimer_set(&handle->ev, timer_cb, handle);
    evtimer_add(&handle->ev, &tv);
    handle->callback = callback;
    handle->userdata = userdata;

    return handle;
}

void tssp_timer_impl_delete(struct tssp_timer_handle *handle)
{
    if (handle) {
        evtimer_del(&handle->ev);
        free(handle);
    }
}

